Machine for winding sewing-machine bobbins



(No Model.)

W. R. LANDPEAR.

MAGHINE FOR WINDING SE'WING MAUHINE BOBBINS, &c.

No. 398,057. g Patented 313.19, 1889.

W ess es,

NY FUERS. Phow-Lilhognpher, Wilmington. o. a

'UNTTED STATES PATENT ()FFICE.

VILLIAM R. LANDFEAR, OF BROOKLYN, NEW" YORK, ASSIGNOR TO THE ILLIMANTICLINEN COMPANY,

OF VVILLIMANTIC, CONNECTICUT.

MACHINE FOR WINDING SEWING-MACHINE BOBBINS, 84.0.

SPECIFICATION forming part of Letters Patent No. 398,057, dated February19, 1889. Application filed February 7, 1834- Serial No. 120,086- (Nomodel.)

To all whom it may concern:

Be it known that 1, WILLIAM R. LANDFEAR,

of the city of Brooklyn, in the county'of Kings and State of New York,have invented a new and useful Improvement in Machines for WindingSewing-Machine Bobbins, &c., of which the following is a specification.

My invention is applicable, generally, to machines for winding bobbinsor spools, but is more especially intended to be embodied in machinesfor winding sewing-machine bobbins, the object of the invention being toprovide a simple and compact machine that will wind several bobbins atonce. Such a machine may be advantageously employed in a factory, wherea large number of sewing-machines are in use, for winding thesewingmachine bobbins; or it may be employed for i winding bobbins to besold.

The invention consists in novel combinations of parts, which arehereinafter described, and pointed out in the claims.

I will first give a brief description of the machine which I have chosento illustrate my invention. I employ a number or series of spindlesarranged horizontally and in the arc of a circle, and a correspondingnumber of back-centers in line with the several spindles. The spindlesare provided with heads or chucks which serve to carry the bobbins orspools, and the bobbins or spools are held in engagement with thespindle heads or chucks by means of the back-centers, on which thebobbins or spools turn freely at one end as they are rotated by theengagement of the spindle heads or chucks with their other ends. Theseveral spindles arranged in the arc of a circle, as described, aregeared with a driving-shaft arranged con- 40 centric to the said are,and on said shaft are right and left hand screw-threads, which engagealternately with haltnuts to move the traverse guide-carrier back andforth as the shaft rotates. The twosaid half-nuts are fixed on alongitudinally-movable traverse-bar, and are adapted to be engagedalternately with opposite sides of the screw-threaded centershaft tomove the traverse guide-carrier back and forth. v o In the accompanyingdrawings, Figure 1 is a back elevation, partly in section, of my imlproved machine. Fig. 2 is a horizontal seci tion thereof on the dottedline x on, Fig. 1, the

, center or driving shaft and pulleys being shown in full view. Fig. 3is a transverse i vertical section on the dotted line y L Fig. 2,

F the back-centers and the arc-shaped stock or standard in which theyare movable being broken away; and Fig. 4 is a horizontal secy tion ofcertain of the parts shown-in Fig. 2 6o 1 in a slightly'differentposition.

1 Similar letters of reference designate correj' sponding parts in allthe figures.

j A designates the base-plate or bed of the machine, on which areerected standards or supports B B, which constitute, respectively,

1 the head and tail stocks of the machine.

C designates a central driving-shaft, which is provided with fast andloose pulleys C C J for a belt, which may be controlled by abeltshipper, This shaft is journaled at one end in the head-stock B andat the other end in a standard or upright, B It is intended to berotated in the direction indicated by the arrows on the several figures.

D designates spindles, of which I employ a number or series. I have hererepresented four, but may employ more or less than that number. Thespindles D are fitted to horizontal bearings in the head-stock B, asshown 86 in Figs. 1 and 2, and are arranged in the arc of a circle, asshown in Fig. 3. The shaft 0 is concentric with such are, and on saidshaft, outside the head-stock B, is .a spur-wheel, a, which engages withpinions Z) on said spindles 85 D, and thus drives said spindles. Aguard,

19, attached to the head-stock B, serves to cover the pinions b.

E designates the back-centers, which are arranged in the same are as thespindles D and 0 are in line with said spindles. Each backcenter E isfitted to a bearing in the tail-stock B, wherein it mayslidelongitudinally, and is impelled toward the opposite spindle D by aspring, 0, arranged, as shown in Figs. 1 and 5 2, between a shoulder,cl, on the back-center and the end of the recess or bearing wherein saidback-center is held.

011 the end of each spindle D is a head or the end of a bobbin to driveit, and the backcenter E serves simply to hold the bobbin in chuck,e,which is constructed to engage with Ioo engagement with said head orchuck. To take out a bobbin, theback-center E is pulled back against theforce of the spring 0, and another bobbin may then be inserted.

The spindles D and their corresponding back-centers may have maleorfemale centers, as is desired.

A rotary spindle and a back-center have before been arranged in line forwinding a bobbin; but a number or series of spindles and back-centersarranged in the arc of a circle of which the drivil'ig-shaft is thecenter constitute a very compact and simple arran genient which willwind bobbins very rapidly. Such arrangement is also advantageous becauseof the facility with which a number of bobbins can be placed in themachine at once and removed from the machine when wound.

In operating the machine thebelt is shifted onto the loose pulley G andthe attendant pulls back the several back-centers and places l fourbobbins in the machine, the thread being clamped and held between theend of the bobbin and the spindle head or chucks in the usual way. Themachineis then started, and the four spindles D, with their bobbins, arerotated by the single wheel a, gearing with their pinions I). 'When thebobbins are full, the machine is stopped, the bobbins are all taken outand are replaced by others.

F designates the traverse bar or rod, which is placed over the shaft 0,and is adapted to slide in bearings in the headstock B and standard 13*.On the traverse rod or bar F are two arms, F F, which project downwardand on opposite sides of the shaft C. The arm F, which projects behindsaid shaft, carries a half-nut, f, and the arm F which projects in frontof said shaft, carries a similar l1alfnut,f. Upon the shaft C are rightand left hand threads 9 g, with which the nuts ff may engage. Thesethreads are of fine pitch, but in the drawings are shown coarse in orderto make them more clear.

The arms F F are secured on the traverse rod F by means of set-screws fand they form such an angle with each other, as best shown in 3, thatwhen the half-nut f on the arm F is in engagement with the thread g onthe shaft 0 the nut f on the arm F will be held out of engagement withthe thread g on said shaft, and when the nut f is in engagement with thethread 9 the nut f will be held out of engagement with the thread g. Asbefore stated, the shaft 0 always rotates in the direction' indicated bythe arrow, and in the drawings the nut f is shown in engagement with theleft-hand thread g. Consequently the rotation of the shaft 0 will movethe traverse rod F, with its arms F F toward the right hand in Figs. 1and 2. If now the rod F is turned just enough to bring the nut f intoengagement with the right-hand thread g, the shaft G will move the rod Fand arms F F toward the left hand in said figures.

At the lower end of the arm F is a horizontal projection, 71, which isformed with inclines or cam-surfaces 6 i on opposite sides, and whichmoves between two springs, G G, as the arm F is traversed back andforth, and as best shown in Fig. 4. These springs are provided withrollers at their ends.

011 the arm F is a downwardly-projccting tongue, k, which is formed onthe lower end of a plate, 7c, secured to the front of said arm, and justbelow said arm is an upwardlyprojecting stationary abutment or cam, l,the thickness of which is sufficient to cause the engagement anddisengagement of the nuts f f with and from the screws g g, by reason ofthe tongue k passing on one side or the other of said cam or abutment Z.As the arm F and its horizontal projection 7a move to and fro betweenthe springs G G, the cam surfaces 2' 2'' act alternately on the saidsprings, cramping one or the other as the direction of movement ischanged, and as soon as the tongue 76 passes the stationary abutment orcaml the spring thus cramped or deflected throws the arm F toward oraway from its screw g, and so produces the engagement of the nut f withsaid screw or its disengagement therefrom.

The arm F and its projection h are repre sented in the drawings asmoving in the direction of the arrows, Figs. 2 and 1, the. nut f beingout ofengagement with the screw g. As clearly shown in Fig. 4, theincline i has acted on the spring G and holds it under tension. As soonas the edge of the tongue it passes the edge of the cam or abutment Zthe spring G will move the arm 1" toward the screw g, and will thus movethe nutf into ongagement therewith and free the nut f from the screw 9.The direction of movementof the traverse-bar F and its arms will thus bereversed and the tongue It will pass on the front side of the cam Z,which will thus hold the nutf in engagement with the screw As themovement toward the left continues, the incline 'i will act upon anddeflect or cramp the spring G, thus producing a force which will movethe arm F backward and free its nut from the screw g as soon as thetongue passes the left-hand edge of the cam Z. In order to guide thetongue 70 positively on one side or the other of the cam Z, the edges ofboth are beveled, as shown, and thus the cortainty of the tongue passingon the proper side of the cam Z is insured. In Fig. 4; the tongue L isindicated by dotted section-lines.

The arm F constitutes the carrier for the thread-guides to produce thenecessary traverse. These guides may be of any suitable kind, and asmany are employed as there are spindles D and back centers E. As hereshown, each guide consists of aplate or piece, m, in which is a notch,71, for the thread, and to which is pivoted a latch or keeper, 0, forholding the thread in the notch. Each guide has a stem, 0, which issecured in the carrier by a set'screw, 0 as shown in Fig. 2.

When the machineis used to wind bobbins ITO l'or the sewing-machines inuse in a factory, the quantity of thread is not important, and theattendant may stop the machine and take out the bobbins when thequantity of thread wound is thought to be sufficient; but When used forWinding bobbins or spools to be put up for sale any ordinary andsuitable stopmotion may be used to stop the machine when a definitequantity of thread is Wound on the bobbins.

Whatl claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, with the spindles D and back-centers E, arranged inthe arc of a circle, of the spindle-driving shaft 0, concentric withsaid are and provided with right and left hand threads 9 g, gearing fordriving said spindles from said shaft, the traverse-rod F, with its armsF F and their nuts f f engaging with said threads on the saiddrivingshaft, and guides, one for each spindle, all carried by thesingle traverse-rod, substantially as herein described.

2. The combination, with the spindles and back-centers D E, arranged inthe arc of a circle, of the concentric right and left hand threadeddriving-shaft, the traverse-rod F, and its arms F F having nuts f fengaging each respectively with one of the threads of the driving-shaft,thread-guides, one for each spindle, all carried by the onetraverse-rod, the projection 72, having cam-surfacest'i, and a tongue,it, all carried by one of the arms of the traverse-rod, the springs G G,and the stationary cam or abutment Z, all substantially as hereindescribed.

WILLIAM R. LANDFEAR.

Vitnesses:

FREDK. HAYNES, HARRY BOGERT,

